Workability of concrete is inversely proportional to

Question

Workability of concrete is inversely proportional to

A. Time of transit

B. Water-cement ratio

C. The air in the mix

D. Size of aggregate

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Ordinary Portland cement is manufactured from

A. Lime stone and clay

B. Gypsum and lime

C. Pozzolana

D. Lime, pozzolana and clay

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Addition of pozzolana to cement causes

A. Reduction in permeability

B. Loss of heat of hydration

C. Reduction in bleeding

D. All the above

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Diagonal tension in a beam

A. Is maximum at neutral axis

B. Decreases below the neutral axis and increases above the neutral axis

C. Increases below the neutral axis and decreases above the neutral axis

D. Remains same

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Pre-stress loss due to friction occurs

A. Only in post-tensioned beams

B. Only in pre-tensioned beams

C. In both post-tensioned and pre-tensioned beams

D. None of the above

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Addition of pozzolana to ordinary port land cement, causes

A. Decrease in early strength

B. Reduction in chemical action with sulphates

C. Increase in shrinkage

D. All the above

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The compaction of concrete, improves

A. Density

B. Strength

C. Durability

D. All the above

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Separation of water or water sand cement from a freshly concrete, is known

A. Bleeding

B. Creeping

C. Segregation

D. Flooding

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Sinking of an intermediate support of a continuous beam (i) Reduces the negative moment at support (ii) Increases the negative moment at support (iii) Reduces the positive moment at center of span (iv) Increases the positive moment at center of span The correct answer is

A. (i) and (iii)

B. (i) and (iv)

C. (ii) and (iii)

D. (ii) and (iv)

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The risk of segregation is more for

A. Wetter mix

B. Larger proportion of maximum size aggregate

C. Coarser grading

D. All the above

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In order to obtain the best workability of concrete, the preferred shape of aggregate is

A. Rounded

B. Elongated

C. Angular

D. All of the above

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For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:

A. 70 litres of sand and 120 litres of aggregates

B. 70 kg of sand and 140 litres of aggregates

C. 105 litres of sand and 140 litres of aggregates

D. 105 litres of sand and 210 litres of aggregates

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The diameter of the Vicat plunger is 10 mm and its length varies from

A. 20 mm to 30 mm

B. 30 mm to 40 mm

C. 40 mm to 50 mm

D. 50 mm to 60 mm

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Pick up the incorrect statement from the following:

A. Concrete for which preliminary tests are conducted, is called controlled concrete

B. Bulking of sand depends upon the fineness of grains

C. Concrete mix 1 : 6 : 12, is used for mass concrete in piers

D. All the above

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The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

A. 0.367 x_u

B. 0.416 x_u

C. 0.446 x_u

D. 0.573 x_u

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The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

A. Only (i)

B. (i) and (ii)

C. (i) and (iii)

D. All (i), (ii) and (iii)

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The limits of percentage p of the longitudinal reinforcement in a column is given by

A. 0.15% to 2%

B. 0.8% to 4%

C. 0.8% to 6%

D. 0.8% to 8%

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A T-shaped retaining wall mainly consists of

A. One cantilever

B. Two cantilevers

C. Three cantilevers

D. Four cantilevers

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The maximum amount of dust which may be permitted in aggregates is

A. 5% of the total aggregates for low workability with a coarse grading

B. 10% of the total aggregates for low workability with a fine grading

C. 20% of the total aggregates for a mix having high workability with fine grading

D. All the above

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The commercial name of white and coloured cement in India, is

A. Colorcrete

B. Silvicrete

C. Snowcem

D. All the above

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Efflorescence in cement is caused due to an excess of

A. Alumina

B. Iron oxide

C. Silica

D. Alkalis

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Saw dust can be rendered chemically inert by boiling it in water containing

A. Ferrous sulphate

B. Potassium chloride

C. Ammonia

D. Nitric acid

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In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

A. (i) and (ii),

B. (ii) and (iii)

C. (i) and (iv)

D. (iii) and (iv)

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Sand requiring a high water cement ratio, belongs to

A. Zone I

B. Zone II

C. Zone III

D. Zone IV

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In a pile of length l, the points of suspension from ends for lifting it are located at

A. 0.207 l

B. 0.25 l

C. 0.293 l

D. 0.333 l

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Sand generally contains salt if it is obtained from:

A. Nala beds

B. River beds

C. Sea beds

D. None of these

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The minimum diameter of longitudinal bars in a column is

A. 6 mm

B. 8 mm

C. 12 mm

D. 16 mm

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For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

A. 0.75 - 0.80

B. 0.80 - 0.85

C. 0.85 - 0.92

D. Above 0.92

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According to IS: 4561978, minimum slenderness ratio for a short column is

A. Less than 12

B. Less than 18

C. Between 18 and 24

D. More than 24

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If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

A. 7.30

B. 7.35

C. 7.40

D. 7.45

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Slump test of concrete is a measure of its

A. Consistency

B. Compressive strength

C. Tensile strength

D. Impact value

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Accepted Answer

A. Time of transit

Workability of concrete is inversely proportional to

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ordinary Portland cement is manufactured from

Addition of pozzolana to cement causes

Diagonal tension in a beam

Pre-stress loss due to friction occurs

Addition of pozzolana to ordinary port land cement, causes

The compaction of concrete, improves

Separation of water or water sand cement from a freshly concrete, is known

Sinking of an intermediate support of a continuous beam (i) Reduces the negative moment at support (ii) Increases the negative moment at support (iii) Reduces the positive moment at center of span (iv) Increases the positive moment at center of span The correct answer is

The risk of segregation is more for

In order to obtain the best workability of concrete, the preferred shape of aggregate is

For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:

The diameter of the Vicat plunger is 10 mm and its length varies from

Pick up the incorrect statement from the following:

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

The limits of percentage p of the longitudinal reinforcement in a column is given by

A T-shaped retaining wall mainly consists of

The maximum amount of dust which may be permitted in aggregates is

The commercial name of white and coloured cement in India, is

Efflorescence in cement is caused due to an excess of

Saw dust can be rendered chemically inert by boiling it in water containing

In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

Sand requiring a high water cement ratio, belongs to

In a pile of length l, the points of suspension from ends for lifting it are located at

Sand generally contains salt if it is obtained from:

The minimum diameter of longitudinal bars in a column is

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

According to IS: 4561978, minimum slenderness ratio for a short column is

If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

Slump test of concrete is a measure of its

Also checkout

Workability of concrete is inversely proportional to

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ordinary Portland cement is manufactured from

Addition of pozzolana to cement causes

Diagonal tension in a beam

Pre-stress loss due to friction occurs

Addition of pozzolana to ordinary port land cement, causes

The compaction of concrete, improves

Separation of water or water sand cement from a freshly concrete, is known

Sinking of an intermediate support of a continuous beam (i) Reduces the negative moment at support (ii) Increases the negative moment at support (iii) Reduces the positive moment at center of span (iv) Increases the positive moment at center of span The correct answer is

The risk of segregation is more for

In order to obtain the best workability of concrete, the preferred shape of aggregate is

For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:

The diameter of the Vicat plunger is 10 mm and its length varies from

Pick up the incorrect statement from the following:

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where xu is the depth of neutral axis at the limit state of collapse)

The depth of footing for an isolated column is governed by (i) Maximum bending moment (ii) Shear force (iii) Punching shear The correct answer is

The limits of percentage p of the longitudinal reinforcement in a column is given by

A T-shaped retaining wall mainly consists of

The maximum amount of dust which may be permitted in aggregates is

The commercial name of white and coloured cement in India, is

Efflorescence in cement is caused due to an excess of

Saw dust can be rendered chemically inert by boiling it in water containing

In a counterfort retaining wall, the main reinforcement is provided on the (i) Bottom face in front counterfort (ii) Inclined face in front counterfort (iii) Bottom face in back counterfort (iv) Inclined face in back counterfort The correct answer is

Sand requiring a high water cement ratio, belongs to

In a pile of length l, the points of suspension from ends for lifting it are located at

Sand generally contains salt if it is obtained from:

The minimum diameter of longitudinal bars in a column is

For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

According to IS: 4561978, minimum slenderness ratio for a short column is

If 20 kg of coarse aggregate is sieved through 80 mm, 40 mm, 20 mm, 10 mm, 4.75 mm, 2.36 mm, 1.18 mm, 600 micron, 300 micron and 150 micron standard sieves and the weights retained are 0 kg, 2 kg, 8 kg, 6 kg, 4 kg respectively, the fineness modulus of the aggregate, is

Slump test of concrete is a measure of its

Also checkout

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)